673725772863 has 96 divisors (see below), whose sum is σ = 1156414791168. Its totient is φ = 372596371200.

The previous prime is 673725772801. The next prime is 673725772871. The reversal of 673725772863 is 368277527376.

It is a happy number.

673725772863 is a `hidden beast` number, since 6 + 7 + 37 + 2 + 577 + 28 + 6 + 3 = 666.

It is a Cunningham number, because it is equal to 820808²-1.

It is not a de Polignac number, because 673725772863 - 2⁶ = 673725772799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673725772863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673725772873) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 81255748 + ... + 81264038.

It is an arithmetic number, because the mean of its divisors is an integer number (12045987408).

Almost surely, 2^673725772863 is an apocalyptic number.

673725772863 is a deficient number, since it is larger than the sum of its proper divisors (482689018305).

673725772863 is a wasteful number, since it uses less digits than its factorization.

673725772863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9037 (or 9034 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 63.

The spelling of 673725772863 in words is "six hundred seventy-three billion, seven hundred twenty-five million, seven hundred seventy-two thousand, eight hundred sixty-three".